Maintenance; General; Maintenance Schedule; Burner Inspection - Lochinvar ECOKNIGHT EKW46CE Installation Manual

19.0 MAINTENANCE

19.1

GENERAL

Keep appliance area clear and free from combustible materials and flammable vapours and liquids.
A competent person should check and ensure that the flue, its support and terminal, the ventilation to the Boiler house, safety valve,
drain, pressure gauge etc. are in a serviceable and working condition and still comply with the relevant standards and codes of
practice, as detailed in Section 6.0: GENERAL REQUIREMENTS.
Servicing is recommended at intervals no greater than 12 months to aid trouble free operation. Even if a maintenance schedule is
determined to be less than annually, it is important that all controls and safety features are checked for correct operation on an
annual basis.
Measuring flue gas CO and flue gas temperatures will give an indication of the state of the flue and burner. Results of the flue gas
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analysis should be compared with previously measured values to identify any changes in operational characteristics.
19.2

MAINTENANCE SCHEDULE

The water heater has a built in function that reminds the user that routine maintenance is due. As a default, this is set to 12 months
10,000 operational hours or 10,000 ignition cycles. Lochinvar recommends that this be the maximum service interval.
19.3

BURNER INSPECTION

The heat exchanger has a sight glass for inspection of the flame picture.
NOTE: If the appliance has been in recent operation, this area may be hot. Appropriate precautions
should be taken to prevent personal injury.
To check the flame picture at high and low fire, the following procedure should be followed:
1. Place the water heater into service mode. This is done by depressing the small button below the Enter/Reset button for 5
seconds.
2. The water heater should shut down and relight.
3. Depress the service button momentarily, this should ramp the water heater up to full rate.
4. Check the flame condition.
5. Depress the service button momentarily, this should ramp the water heater down to low rate.
6. Check the flame condition.
7. Press and hold the service button for 5 seconds to take the unit out of service mode.
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